//
// Created by 吴锐 on 2022/2/25.
//

#include "iostream"

using namespace std;

class Person {
public:
    mutable int a;

    void showPerson() const {
        this->a = 100;
    }
};

void test01(){
    Person p;
    p.showPerson();
}

void test02(){
    const Person p;
    p.a = 1;
    p.showPerson();
}

int main(){

    return 0;
}